Replace the drain plug in your 2017-2019 Chevy/GMC 6.6L L5P Duramax with new Oil Drain Plugs & Valves. A standard thread-in drain plug can become damaged, rounded, or stripped making it difficult to remove, or can also cause oil leaks. In most cases a drain plug is fairly inexpensive and is simple to replace during preventative maintenance. Upgraded oil drain plugs are available for most applications and make it easy for you to quickly and cleanly drain your engine oil with just the turn of a lever. Get industry-leading manufacturers such as Mishimoto, Dorman, EZ Oil Drain, and Fumoto.